134 



The Dancing Mouse 



was placed in the orange box. As the purpose of the test was 

 to discover whether the animals could learn to go directly 



O 



B 



V 







B 







V 







111 



FIGURE 18. Food-box apparatus for color discrimination experiments. O, 

 orange food-box; B, blue food-box; i, 2, 3, 4, different positions of the food- 

 boxes, O and B ; I, II, III, IV, figures in which the arrows indicate the direction 

 in which the food-boxes were moved. 



to the box which contained the food, the experiments were 

 made each morning before the mice had been fed. The 

 experimental procedure consisted in placing the individual 

 to be tested in the end of the large wooden box opposite the 

 color boxes, and then permitting it to run about exploring 



